Differences between GTI and R engine: Difference between revisions
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[[File:02 VW Gen 3 EA88 exhaust cooling diagram.webp|alt=Illustration of ea888.3|thumb|Exploded diagram of ea888.3]] | |||
The ea888 Gen3 engine found in the Mk7 Golf R boasts several upgrades versus the ea888 Gen3 found in the GTI: | The ea888 Gen3 engine found in the Mk7 Golf R boasts several upgrades versus the ea888 Gen3 found in the GTI: | ||
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== Turbocharging: == | == Turbocharging: == | ||
* Larger IHI IS38 turbocharger | * Larger IHI [[IS38 Turbocharger Specs|IS38]] turbocharger | ||
* Increased charge pressure: up to 17.4 PSI (1.2 bar) | * Increased charge pressure: up to 17.4 PSI (1.2 bar) | ||
* Larger turbo charge cooler | * Larger turbo charge cooler | ||
Revision as of 17:12, 7 December 2023
The ea888 Gen3 engine found in the Mk7 Golf R boasts several upgrades versus the ea888 Gen3 found in the GTI:
Head:
- Different alloy: withstands higher thermal stress
- Hollow exhaust valves: with high Ni content and nitride coating for superior heat and wear resistance
- Improved valve seats: enhanced temperature stability and wear resistance
- Adapted exhaust camshaft: optimized valve timing
Pistons and Cooling:
- Reduced compression ratio: 9.3:1 (versus 9.5:1) with redesigned pistons
- High-flow piston cooling jets: for improved heat dissipation
Fuel Delivery:
- High-pressure DI injectors: with increased flow rate for optimal fuel injection
Turbocharging:
- Larger IHI IS38 turbocharger
- Increased charge pressure: up to 17.4 PSI (1.2 bar)
- Larger turbo charge cooler
Cooling System:
- High-performance main radiator: ensures efficient engine cooling
- 1-2 auxiliary radiators (depending on region): provide additional cooling capacity
